My Precision 5540 is not detecting any jack inputs. When I plug in my headphones there is no popup prompting whether I've just plugged something in, and the audio continues to play through the laptop speakers. 

System: Windows 10 Enterprise, 64bit, ver. 1809

I disabled Realtek audio driver, rebooted, enabled it again - and nothing.
Then I uninstalled audio driver and installed it again - nothing.

Any suggestions?